Corrected a serious bug in eoUniformMutation (double declaration of bool HasChanged)

The consequence was that if that mutation was the only operator called on some
individual, it was not invalidated, and hence its fitness not recomputed!!!

eo/src/es/eoRealOp.h

@@ -111,7 +111,6 @@ template<class EOT> class eoUniformMutation: public eoMonOp<EOT>
 	  if (_eo.size() != bounds.size())
 	    throw runtime_error("Invalid size of indi in eoUniformMutation");
 
-	  bool hasChanged=false;
 	  for (unsigned lieu=0; lieu<_eo.size(); lieu++)
 	    if (rng.flip(p_change[lieu]))
 	      {